Flat feet generally do not affect height. Flat foot refers to low or disappearing arch, which causes biomechanical changes in the human foot when walking under load, and long-term weight-bearing can easily lead to foot pain, plantar fasciitis, and skeletal deformities, such as toe exostosis, heel exostosis, and X-shaped leg deformity. Height is determined by heredity as well as acquired environment, and the growth of height is mainly due to the ossification of epiphysis to extend the bone, which leads to the growth of height. The deformities caused by flat feet, such as toe outversion, heel outversion and X-shaped leg, will not affect the growth of the epiphysis, and therefore generally will not affect the height and growth and development of the human body. Therefore, flat feet generally do not affect height, but long-term flat feet are prone to cause bone deformities, flat feet people are advised to avoid long-term weight-bearing walking, pad arch insoles, pain and other symptoms in a timely manner when the hospital consultation.